CN106507332A - A kind of data transmission method, Mobility Management Entity and mobile terminal - Google Patents

A kind of data transmission method, Mobility Management Entity and mobile terminal Download PDF

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Publication number
CN106507332A
CN106507332A CN201610908767.3A CN201610908767A CN106507332A CN 106507332 A CN106507332 A CN 106507332A CN 201610908767 A CN201610908767 A CN 201610908767A CN 106507332 A CN106507332 A CN 106507332A
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CN
China
Prior art keywords
small data
data transmission
management entity
mobility management
user terminal
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Granted
Application number
CN201610908767.3A
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Chinese (zh)
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CN106507332B (en
Inventor
于琦
郭小龙
张万强
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201610908767.3A priority Critical patent/CN106507332B/en
Publication of CN106507332A publication Critical patent/CN106507332A/en
Application granted granted Critical
Publication of CN106507332B publication Critical patent/CN106507332B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Abstract

The embodiment of the invention discloses a kind of data transmission method, Mobility Management Entity and mobile terminal, the method includes：Mobility Management Entity receives the small data transmission parameter that home subscriber server HSS or user terminal send, and the small data transmission parameter includes whether the user terminal supports the instruction of small data transmission；The Mobility Management Entity is according to the small data transmission parameter determination small data transmission strategy；The small data transmission strategy of the determination is sent to user terminal by the Mobility Management Entity；The Mobility Management Entity carries out small data transmission according to the small data transmission strategy and user terminal.In the present invention, it is proposed that a kind of more complete small data transmission scheme, effective transmission of small data is realized.

Description

A kind of data transmission method, Mobility Management Entity and mobile terminal
Technical field
The present invention relates to field of wireless communication, more particularly to a kind of data transmission method, Mobility Management Entity and movement Terminal.
Background technology
In System Architecture Evolution (System Architecture Evolution, SAE) communication system architecture, terminal is led to Cross the Mobility Management Entity (Mobility that evolution base station (Evolved NodeB, eNodeB or eNB) is linked into core net Management Entity, MME) and gateway (Serving Gateway, S-GW), and packet count is connected to through S-GW According to network gateway (Packet Date Network Gateway, P-GW).
Small data transmission is a kind of special data transfer in wireless communication system.Carry out data transmission needing to lead to Cross signaling and set up user plane bearer (including core-network side and eat dishes without rice or wine side), but for small data (typically smaller than 1K bytes) can be with Be such as only transmitting 1 time or 2 times of infrequently transmitting, user plane is set up in this case through signaling for which, transmission data, Empty port load-supporting to be deleted also after completing, waste signal resource.
Content of the invention
It is an object of the invention to provide a kind of data transmission method and Mobility Management Entity, in order to avoid signal resource Waste.
On the one hand, a kind of data transmission method is embodiments provided, including：
Mobility Management Entity receives the small data transmission parameter that home subscriber server HSS or user terminal send, institute Stating small data transmission parameter includes whether the user terminal supports the instruction of small data transmission；
The Mobility Management Entity is according to the small data transmission parameter determination small data transmission strategy；
The small data transmission strategy of the determination is sent to user terminal by the Mobility Management Entity；
The Mobility Management Entity carries out small data transmission according to the small data transmission strategy and user terminal.
On the other hand, the embodiment of the present invention additionally provides a kind of data transmission method, including：
User terminal sends to Mobility Management Entity and carries small data transmission parameter, and the small data transmission parameter includes Whether the user terminal supports the instruction of small data transmission, so that the Mobility Management Entity is passed according to the small data Defeated parameter determination small data transmission strategy；
The user terminal receives the small data transmission strategy that the Mobility Management Entity sends；
The user terminal carries out small data transmission according to the small data transmission strategy and the Mobility Management Entity.
On the one hand, the embodiment of the present invention additionally provides a kind of Mobility Management Entity, including：
Receiving unit, for receiving the small data transmission parameter that home subscriber server HSS or user terminal send, described Small data transmission parameter includes whether the user terminal supports the instruction of small data transmission；
Determining unit, for the small data transmission parameter determination small data transmission strategy received according to the receiving unit；
Transmitting element, for being sent to user terminal by the small data transmission strategy that the determining unit determines；
Transmission unit, the small data transmission strategy for being determined according to the determining unit carry out little with user terminal Data transfer.
On the one hand, the embodiment of the present invention additionally provides a kind of mobile terminal, including：
Parameter transmitting element, carries small data transmission parameter for sending to Mobility Management Entity, and the small data is passed Defeated parameter includes whether the user terminal supports the instruction of small data transmission, so that the Mobility Management Entity is according to institute State small data transmission parameter determination small data transmission strategy；
Policy receipt unit, for receiving the small data transmission strategy that the Mobility Management Entity sends；
Data transmission unit, for the small data transmission strategy that received according to the Policy receipt unit and the shifting Mobility management entity carries out small data transmission.
The present invention receives the small data biography that home subscriber server HSS or user terminal send by Mobility Management Entity Defeated parameter, the small data transmission parameter include whether the user terminal supports the instruction of small data transmission, the mobility According to the small data transmission parameter determination small data transmission strategy, the Mobility Management Entity is according to will be described for management entity The small data transmission strategy of determination is sent to user terminal, the Mobility Management Entity according to the small data transmission strategy with User terminal carries out small data transmission.So that Mobility Management Entity interacts with user terminal whether both sides can support decimal According to the characteristic of transmission, perfect existing small data transmission mechanism, it is to avoid data surface radio bearer transmissions used in prior art Small data, it is to avoid the waste of signal resource.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a schematic flow sheet of data transmission method embodiment of the present invention；
Fig. 2 is another schematic flow sheet of data transmission method embodiment of the present invention；
Fig. 3 is another schematic flow sheet of data transmission method embodiment of the present invention；
Fig. 4 is a composition schematic diagram of the Mobility Management Entity in the embodiment of the present invention；
Fig. 5 a～5d is the composition schematic diagram of component units in the Mobility Management Entity in the embodiment of the present invention；
Fig. 6 is a composition schematic diagram of the mobile terminal in the embodiment of the present invention；
Fig. 7 a are one composition schematic diagrams of data transmission unit of the mobile terminal in the embodiment of the present invention；
Fig. 7 b are data transmission unit another composition schematic diagrams of the mobile terminal in the embodiment of the present invention；
Fig. 8 is of the information interactive process between the UE in the embodiment of the present invention and MME before small data transmission Schematic flow sheet；
Fig. 9 is the another of the information interactive process between the UE in the embodiment of the present invention and MME before small data transmission Individual schematic flow sheet；
Figure 10 is that network side determines that small data transmission carries and consults to set up the process for carrying in the embodiment of the present invention One schematic flow sheet；
Figure 11 is a schematic flow sheet of the process that network side determines small data transmission carrying in the embodiment of the present invention；
Figure 12 is an idiographic flow schematic diagram of uplink and downlink direction data transfer in the embodiment of the present invention；
Figure 13 is an idiographic flow schematic diagram of the up-downgoing data transfer in the embodiment of the present invention in MT scenes.
Specific embodiment
Accompanying drawing in below in conjunction with the embodiment of the present invention, to the embodiment of the present invention in technical scheme carry out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiment.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Propose in embodiments of the present invention, the negotiation that small data transmission is carried out by Mobility Management Entity, perfect existing Some small data transmission schemes.In certain embodiments also, it has been proposed that to set up proprietary core for small data transmission net loaded, carry High data transmission efficiency；Also provide in certain embodiments, the IP the package lists for setting up small data carry out data transmission, can one The secondary small data data for transmitting multiple units, improve efficiency of transmission.Illustrated below by way of each specific embodiment respectively.
Small data is encapsulated in Non-Access Stratum (Non Access Stratum, NAS) message and passes to MME, by MME roads By to SGW, SGW passes to PGW by the user plane bearer of its core-network side.UE and MME is needed all to support this in this scheme Individual characteristic, but the method for whether supporting small data characteristic how is not transmitted with regard to network and UE in prior art.
In order to solve above-mentioned technical problem, the invention provides following technical proposals：
Fig. 1 is a schematic flow sheet of data transmission method embodiment of the present invention, including：
101st, Mobility Management Entity receives the small data transmission ginseng that home subscriber server HSS or user terminal send Number, the small data transmission parameter include whether the user terminal supports the instruction of small data transmission；
102nd, the Mobility Management Entity is according to the small data transmission parameter determination small data transmission strategy；
103rd, the Mobility Management Entity is sent to user terminal according to the small data transmission strategy by the determination；
104th, the Mobility Management Entity carries out small data transmission according to the small data transmission strategy and user terminal.
Above-described embodiment emphasis in an embodiment as illustrated in figure 2, is then retouched from the angle of mobile terminal centered on MME Another schematic flow sheet for the data transmission method that realizes in the embodiment of the present invention is stated.
201st, user terminal sends to Mobility Management Entity and carries small data transmission parameter, the small data transmission parameter bag The instruction whether user terminal supports small data transmission is included, so that the Mobility Management Entity is according to the small data transmission ginseng Number determines small data transmission strategy.Wherein, small data transmission parameter also includes the traffic performance of small data, the business of the small data Characteristic includes each transmitted data amount, data transfer direction, data transfer persistent period, the number of times transmitted within the persistent period In one or more.
202nd, the user terminal receives the small data transmission strategy that the Mobility Management Entity sends.
203rd, the user terminal carries out small data transmission according to the small data transmission strategy and the Mobility Management Entity.
Such as, the small data container comprising uplink small data that the user equipment is sent to the Mobility Management Entity, this is little Data capsule includes carrying mark and the corresponding IP bags of the mark, so that the Mobility Management Entity holds according to the small data Carrying mark in device determines the IP address of network side channel termination point identifier TEID and the Mobility Management Entity, and this is marked Know corresponding IP bags to be configured to GTP-U bags and be transferred to network side.
May also include before step 203 simultaneously：The user terminal is sending the small data container comprising uplink small data Before, check transmission carries whether meet the small data transmission strategy；When inspection result is for meeting, the user terminal is in the biography Small data transmission is carried out according to the small data transmission strategy on transmission bearing, when inspection result is not for meeting, the user terminal is touched Send out Common data transmission flow process and transmit the data.
The present invention receives the small data biography that home subscriber server HSS or user terminal send by Mobility Management Entity Defeated parameter, the small data transmission parameter include whether the user terminal supports the instruction of small data transmission, the mobile management reality According to the small data transmission parameter determination small data transmission strategy, the Mobility Management Entity is according to by the small data of the determination for body Transmission strategy is sent to user terminal, and the Mobility Management Entity carries out decimal according to the small data transmission strategy and user terminal According to transmission.So that Mobility Management Entity interacts the characteristic whether both sides can support small data transmission with user terminal, complete Existing small data transmission mechanism has been apt to it, it is to avoid data surface radio bearer transmissions small data used in prior art, it is to avoid signaling The waste of resource.
As shown in figure 3, be another schematic flow sheet of data transmission method embodiment of the present invention, including：
301st, Mobility Management Entity is obtained on home subscriber server (Home Subscriber Server, HSS) Subscription data, the subscription data include small data transmission parameter；Or the NAS including small data transmission parameter that user terminal sends Message, the small data transmission parameter may include whether the user terminal supports the instruction of small data transmission.
Wherein, the NAS message can be attach request, the request of periodicity tracking area or PDN connection requests etc..
In this step, Mobility Management Entity can with receive user terminal send including small data transmission parameter (message includes user terminal to the NAS message that NAS message, or Mobility Management Entity receive user terminal send Support the instruction of small data transmission), then which asks the subscription data for obtaining the user terminal to HSS, wraps in the subscription data Include the small data transmission parameter of the user terminal；Meanwhile, Mobility Management Entity is except obtaining small data from user terminal or HSS Outside transmission parameter information, Mobility Management Entity small data transmission configuration transmission strategy, such as (dedicated bearing is default for bearer types Carry) or carry various parameters (such as QoS etc.).
Wherein, whether small data transmission parameter at least supports the instruction of small data transmission, can also further include decimal According to traffic performance；Wherein, if the instruction of support small data transmission can be simply to indicate whether to support small data Transmission；Wherein, if small data transmission parameter also includes that the traffic performance of small data, the traffic performance of the small data then may include Each transmitted data amount (transmitting total data volume every time), data transfer direction (up, descending or two-way), data transfer are held One or more in continuous time, the number of times transmitted within the persistent period.Such as, small data transmission parameter can be (up Transmission, 5 times, 100byte).
For Mobility Management Entity, when transmitting small data transmission parameter to which, can be in existing message Increase new parameter, or have this parameter as a part for existing parameter, such as have this parameter as network capabilities A part passes to Mobility Management Entity.
302nd, Mobility Management Entity is according to small data transmission parameter determination small data transmission strategy.
Certainly, the small data transmission strategy for notifying UE sides is usually the content relevant with the UE sides, and some of network side UE need not be notified if strategy (foundation such as carrying etc.).
The Mobility Management Entity carries out the carrying of small data transmission according to the small data transmission parameter determination and network side Type, the bearer types include dedicated bearing or default bearer.
Further,
The Mobility Management Entity is that the small data transmission sets up dedicated bearing according to the small data transmission parameter determination Instruction and the parameter of the dedicated bearing；Or
The Mobility Management Entity according to the small data transmission parameter determination small data transmission using default bearer and The parameter of the default bearer.Or
The small data transmission parameter is sent to network side by the Mobility Management Entity, so that the network side is matched somebody with somebody according to which The carrier policy that puts determines the carrying of transmission small data；
The Mobility Management Entity receives the instruction of the small data carrying that the network side determines, for being designated the small data Dedicated bearing is set up in transmission；Or identify the small data transmission and adopt default bearer.
Mobility Management Entity can transmit the carrying of small data according to the small data transmission parameter determination, work as mobile management Carrier policy is physically configured with, it is also possible to is set up with reference to carrier policy and is carried, when determining using dedicated bearing transmission, The small data transmission strategy includes setting up the instruction of dedicated bearing for small data transmission and sets up the parameter of the dedicated bearing, and The small data transmission parameter is notified network side by the Mobility Management Entity, dedicated bearing is set up by network side initiation to carry out Small data transmission；When determining using default bearer transmission, the small data transmission strategy includes carrying out decimal using default bearer Instruction and the parameter of the default bearer according to transmission.
If to determine in small data transmission strategy and carry out small data transmission using default or dedicated bearing, in mobile management Entity is carried out in small data transmission according to the small data transmission strategy, and the user terminal before upstream data is sent was checked and passed Whether transmission bearing (i.e. dedicated bearing or default bearer) meets the small data transmission strategy；When inspection result is for meeting, the use Family terminal carries out small data transmission according to the small data transmission strategy on the transmission is carried, when inspection result is not for meeting, The user terminal triggering Common data transmission flow process transmits the data.
If to determine in small data transmission strategy and carry out small data transmission using default or dedicated bearing, in mobile management Entity is carried out in small data transmission according to the small data transmission strategy, and the user terminal before upstream data is sent was checked and passed Whether transmission bearing (i.e. dedicated bearing or default bearer) meets the small data transmission strategy；When inspection result is for meeting, the use Family terminal carries out small data transmission according to the small data transmission strategy on the transmission is carried, when inspection result is not for meeting, The user terminal triggering Common data transmission flow process transmits the data.
Mobility Management Entity determines that UE sides small data transmission strategy includes：
A kind of situation is：According to the small data transmission parameter, Mobility Management Entity learns that user terminal supports that small data is passed Defeated optimization, then notify the user terminal by the small data transmission strategy that operator configures.I.e. Mobility Management Entity is network pass UE is passed in small data strategies, the strategy during UE transmission datas, is followed.
Another kind of situation is then：According to the small data transmission parameter, Mobility Management Entity learns that user terminal supports decimal According to transmission optimization, then a kind of strategy is selected as current in the multiple small data transmission strategies for configuring from operator according to the parameter Small data transmission strategy, and notify the user terminal, e.g., when Mobility Management Entity determines small data transmission strategy, can Being to determine the small data of current UE according to the small data transmission parameter for obtaining and locally stored operator's small data strategy Transmission strategy, or the various parameters that is known and strategy notify network equipment, determine current UE by network side After small data transmission strategy, then the small data transmission strategy is known from network side.
The small data transmission strategy for passing to UE typically may include：Maximum transmission times are limited, and maximum transmitted byte is limited Etc. content.
Such as, when UE is in IDLE state, business is to be mapped to transmission to carry by detecting TFT by UE, if by inspection Looking into and finding that the transmission is carried is passed for transmitting small data (i.e. this is carried as small data carryings) and meeting network The small data strategies that passs, then be transmitted using corresponding small data strategies, map the data into signaling and wirelessly hold Carry (signaling radio bearer, SRB) and be transmitted (carrying can be default bearer, it is also possible to dedicated bearing)； If data are mapped to common carrying or can not be transmitted according to small data strategies, and UE is then triggered in IDLE states Common data transmission flow process, that is, map the data into and be transmitted on Data Radio Bearer (data radio bearer, DRB). If there is the business arrival for being mapped to that small data are carried and commonly carried simultaneously, normal Sevice Request are triggered Flow process, sets up DRB, does not use small data to carry and is transmitted.
It is when UE has multiple business data transmissions, to be mapped to different bearer by TFT, if industry also to plant situation The small data strategies of business data fit MME transmission, then UE is using small data strategy transmissions.Otherwise setting up DRB is carried out Business data transmission.
Before the lateral user terminal of network sends downlink data, check transmission carries whether meet small data transmission plan Slightly；When inspection result is for meeting, the network side carries out small data biography according to the small data transmission strategy on the transmission is carried Defeated, when inspection result is not for meeting, the network side triggering Common data transmission flow process transmits the data.
Such as, if UE is in idle states, downlink data arrives, if specific small data are carried, SGW by its MME is transferred in piggyback to Downlink data notification message.If the data of common bearer are arrived , in idle states, then the normal Service Request flow processs of SGW triggerings, do not use small data to carry and are passed UE Defeated.
When downlink data reaches SGW, and when having the business datum of multiple carryings, if business datum meets and consults before Small data strategies, then SGW is using the small data strategy transmissions.Otherwise setting up DRB carries out business data transmission.
303rd, the small data transmission strategy of determination is sent to user terminal by the Mobility Management Entity.
304th, the Mobility Management Entity carries out small data transmission according to the small data transmission strategy and user terminal.
The embodiment of the present invention by Mobility Management Entity receive that home subscriber server HSS or user terminal send little Data transmission parameters, the small data transmission parameter include whether the user terminal supports the instruction of small data transmission, the mobility According to the small data transmission parameter determination small data transmission strategy, the Mobility Management Entity is according to by the determination for management entity Small data transmission strategy is sent to user terminal, and the Mobility Management Entity is entered with user terminal according to the small data transmission strategy Row small data transmission.So that Mobility Management Entity interacts the spy whether both sides can support small data transmission with user terminal Property, perfect existing small data transmission mechanism, it is to avoid data surface radio bearer transmissions small data used in prior art, it is to avoid The waste of signal resource.
Another kind of application scenarios of the present invention do not support small data transmission for SGW, then now adopt with the following method：
When network equipment is not supported to carry the characteristic for carrying out small data transmission above by small data transmission, then can be by MME replaces eNB to network equipment distributing user face TEID and network equipment address, to carry out data transmission.Now Instruction with regard to determine transmission carrying then may not include in small data transmission strategy.In view of small data transmission is divided into uplink and downlink Both direction, is illustrated respectively from the two directions individually below.
Up direction：When uplink small data is transmitted, the Mobility Management Entity receives the small data for carrying out user terminal Container, the small data container include carrying mark and the corresponding IP bags of the mark；The Mobility Management Entity is according to the decimal According to container carrying mark determine network side channel termination point identifier (Tunnel Endpoint Identifier, TEID) and The IP address of Mobility Management Entity, and corresponding for mark IP bags are configured to GTP-U bags and are transferred to network side.
Down direction：When descending small data is transmitted, the TEID of the Mobility Management Entity allocation of downlink and address, and will The TEID, address and carry the identification notification network side；The Mobility Management Entity receives the GTP-U bags that the network side sends, The small data of transmission in need is encapsulated in the GTP-U bags；The GTP-U bags for receiving are configured to decimal by the Mobility Management Entity According to container and it is transferred to the user terminal；When the downlink data transmission is completed, the Mobility Management Entity notifies the network side Delete the TEID and address.
When network equipment is not supported to carry the characteristic for carrying out small data transmission above by small data transmission, then can be by MME replaces eNB to network equipment distributing user face TEID and network equipment address, to carry out data transmission.So as to not Need to upgrade SGW, it is possible to support small data transmission characteristic, it is to avoid the wasting of resources.
Another kind of application scenarios of the present invention are to be only supported at one IP number of small data transmission container transport in prior art According to bag, during so as to causing there are multiple IP packets to transmit, the waste of signal resource is caused, in order to solve this problem, the present invention Propose following technical scheme：
Whether small data transmission is carried out by proprietary or default bearer, or eNB is acted on behalf of for network equipment by MME The passage that the mode of distribution TEID and address is set up between MME and network equipment carries out small data transmission, in the mobility pipe Reason entity is when carrying out small data transmission according to the small data transmission strategy, its small data for transmitting be encapsulated in small data container or It is transmitted in GTP-U bags.
IP the package lists be may include in its small data container, the IP the package lists include that multiple carrying marks are corresponding with the mark IP bags.Simply in the downstream direction, IP the package lists, i.e. small data can be built by network equipment or Mobility Management Entity Container includes IP the package lists, and the IP the package lists include that multiple carrying identifies and the corresponding IP bags of the mark, or in GTP-U bags Including IP the package lists, the IP the package lists include that multiple carrying identifies and the corresponding IP bags of the mark.
The present invention carries out small data transmission by proprietary or default bearer, or acts on behalf of eNB for network equipment by MME The passage that the mode of distribution TEID and address is set up between MME and network equipment carries out small data transmission, in the mobility pipe Reason entity is when carrying out small data transmission according to the small data transmission strategy, its small data for transmitting be encapsulated in small data container or It is transmitted in GTP-U bags, when multiple small datas are transmitted, multiple IP data envelopes can be mounted in a signaling message and be passed Defeated, so as to avoid the wasting of resources.
Some of three cases above realize that details is described further in follow-up embodiment.Below on the whole The process that network side interacts small data transmission strategy with UE is respectively described, the process of MME when SGW does not support small data transmission Process, and UE or SGW construction IP the package lists once transmit the process of multiple bearer, it is to be understood that above three mistake Journey can be present in same embodiment simultaneously, it is also possible in one embodiment only with two or a mistake in above-mentioned The situation that journey is combined with prior art, the embodiment of the present invention are simultaneously limited to this.
Accordingly, the embodiment of the invention also discloses a kind of Mobility Management Entity, as shown in figure 4, the mobile management Entity 3 includes：
Receiving unit 30, for receiving the small data transmission parameter that home subscriber server HSS or user terminal send, should Small data transmission parameter includes whether the user terminal supports the instruction of small data transmission.
Determining unit 32, for the small data transmission parameter determination small data transmission plan received according to the receiving unit Slightly.
Transmitting element 34, for being sent to user terminal by the small data transmission strategy that the determining unit determines.
Transmission unit 36, the small data transmission strategy for being determined according to the determining unit are carried out with user terminal Small data transmission.
Wherein it is determined that unit 32 can be used for according to the receiving unit receive the small data transmission parameter determination with Network side carries out the bearer types of small data transmission, and the bearer types include dedicated bearing or default bearer.
As shown in Figure 5 a, determining unit 32 may include：
Proprietary determination subelement 320, the small data transmission parameter determination for being received according to the receiving unit is The small data transmission sets up the instruction of dedicated bearing and the parameter of the dedicated bearing.Or
Default determination subelement 322, for the small data transmission parameter determination institute received according to the receiving unit Small data transmission is stated using default bearer and the parameter of the default bearer.
Or, as shown in Figure 5 b, determining unit 32 includes：
Network side sends subelement 321, and network side sends subelement, for the decimal for receiving the receiving unit Network side is sent to according to configured transmission, so that the network side determines transmission small data according to its carrier policy for configuring Carry.Or,
Network side receiving subelement 323, for receiving the instruction that the small data that the network side determines is carried, the small data holds The instruction of load is used for being designated the small data transmission and setting up dedicated bearing or identify the small data transmission adopting default bearer.
As shown in Figure 5 c, transmission unit 36 may include：
Container reception subelement 360, for the small data container comprising uplink small data that receive user terminal sends, should Small data container includes carrying mark and the corresponding IP bags of the mark.
Mark determination subelement 362, in the small data container that received according to the container reception subelement Carry the IP address that mark determines network side channel termination point identifier TEID and the Mobility Management Entity.
Bag transmission subelement 364, for corresponding for mark IP bags are configured to GTP-U bags, according to the mark really The TEID and the IP address that stator unit determines by the GTP-U and is transferred to network side.
As fig 5d, transmission unit 36 may also comprise：
Distribution subelement 361, for when descending small data is transmitted, the TEID of allocation of downlink and the Mobility Management Entity IP address, and by the TEID, address and carry the identification notification network side.
Bag receiving subelement 363, for receiving the GTP-U bags that the network side sends, encapsulates in need in the GTP-U bags The small data for sending.
Container sends subelement 365, and the GTP-U bags for receiving the bag receiving subelement are configured to small data Container, will be described little according to the IP address of the TEID and the Mobility Management Entity of the distribution subelement distribution Data capsule is transferred to the user terminal.
Subelement 367 is deleted, for when the downlink data transmission is completed, notifying the network side to delete the distribution The IP address of the TEID and the Mobility Management Entity of subelement distribution.
Meanwhile, the embodiment of the present invention additionally provides a kind of mobile terminal, for above-mentioned small data transmission method in, such as scheme Shown in 6, the mobile terminal 1 may include：Parameter transmitting element 10, carries small data transmission for sending to Mobility Management Entity Parameter, the small data transmission parameter include whether the user terminal supports the instruction of small data transmission, so that the mobility pipe Reason entity is according to the small data transmission parameter determination small data transmission strategy；Policy receipt unit 12, for receiving the mobility Management entity send the small data transmission strategy described in small data transmission strategy be the mobile management entity according to the ginseng Number transmitting element sends the small data transmission parameter determination；Data transmission unit 14, for according to the Policy receipt list The small data transmission strategy that unit receives carries out small data transmission with the Mobility Management Entity.
As shown in Figure 7a, data transmission unit 14 may include：Container transmitting element 140, for the mobile management reality The small data container comprising uplink small data that body sends, the small data container include carrying mark and the corresponding IP of the mark Bag, so that the Mobility Management Entity determines network side channel termination point identifier according to the carrying mark in the small data container TEID and the IP address of the Mobility Management Entity, and corresponding for mark IP bags are configured to GTP-U bags and are transferred to network Side.
Or, as shown in Figure 7b, data transmission unit may include：Detection sub-unit 142 is carried, for sending in transmission unit Before uplink small data, check transmission carries whether meet the small data transmission strategy；Data is activation subelement 144, for institute When the result for stating carrying detection sub-unit inspection is to meet the small data transmission strategy, carry according to described in the transmission Small data transmission strategy carries out small data transmission, and when inspection result is not for meeting the small data transmission strategy, triggering is common Data transfer flow process transmits the data.
Below the function of Mobility Management Entity and mobile terminal in the embodiment of the present invention is respectively described on the whole Composition, and the small data transmission process of the two participation, then further describe this with the embodiment in more specific environment below Technical scheme in bright.
As shown in Fig. 8～11, it is four specific embodiments of the data transmission method in the embodiment of the present invention.Wherein, Fig. 8 And the embodiment of Fig. 9 descriptions mainly describes the information interactive process between UE and MME before small data transmission, Figure 10 and Figure 11 In addition to describing the information interactive process between UE and MME, go back emphasis and describe in varied situations, network side determines decimal Carry according to transmission, and consult when necessary to set up the process for carrying.
As shown in figure 8, another specific embodiment of the data transmission method in for the embodiment of the present invention, in this example, Operator is only configured with small data transmission strategy in MME.The method comprises the steps.
801st, UE sends NAS message to MME, and the NAS message includes small data transmission parameter.
The particular content of the small data transmission parameter in the NAS message refers to the description in the embodiment relevant with Fig. 2 Wherein, wherein, whether small data transmission parameter at least supports the instruction of small data transmission, can also further include small data Traffic performance.If including whether the instruction for supporting small data transmission in parameter, the instruction can be simply to indicate to be No support small data transmission；If also including the traffic performance of small data, the service feature of the small data then may include biography every time Transmission of data amount (transmits total data volume) every time, when data transfer direction (up, descending or two-way), data transfer continue Between, one or more in the number of times that transmits within the persistent period.Such as, small data transmission parameter can be (uplink, 5 times, 100byte).
802nd, MME obtains the small data transmission parameter from the NAS message.
803rd, according to the small data transmission parameter determination small data transmission strategy, e.g., small data transmission strategy includes MME The partial strategy of operator's configuration, and notify the UE small data transmission strategies.
The policy content is then corresponding with the content of aforesaid small data transmission parameter, notifies to the small data transmission strategy of UE Can typically include：Maximum transmission times are limited and the contents such as maximum transmitted byte restriction.
Certainly, in this step, the process of the carrying of small data transmission can also be determined including network side, specifically referred to The description in embodiment in Figure 10 and Figure 11.
804th, MME carries out small data transmission according to above-mentioned strategy.
In this example, MME is when knowing that UE supports that small data optimization is transmitted, notify UE will using small data transmission optimize into Row transmission, and the number of transmissions, it is possible to play and effectively set up small data transmission environment and carry out the purpose of small data transmission.
As shown in figure 9, another specific embodiment of the data transmission method in for the embodiment of the present invention, in this example, Operator is configured with multiple small data transmission strategies in MME.The method comprises the steps.
901st, the NAS message that UE is sent to MME.
902nd, MME obtains small data transmission parameter from NAS message, the content of the such as small data transmission parameter includes：UE Whether user terminal supports the instruction of small data transmission, is further additionally may included in the number of transmissions, transmission side in the persistent period To etc..
903rd, MME is determined according to above-mentioned parameter and is transmitted using small data transmission optimization, and according to the parameter in operation The strategy for currently carrying out small data transmission is determined in multiple small data transmission strategies of business's configuration, and the strategy is notified UE.
The small data transmission strategy is then corresponding with the content of aforesaid small data transmission parameter, such as little to UE for notifying Data transmission policies then may include：To be transmitted using small data transmission optimization, maximum transmission times etc..Certainly, net is notified The small data transmission strategy of network side can then include that more contents, such as relevant with the carrying of small data transmission content exist MME determine currently carry out small data transmission tactful when the letter that further can also hold consultation with the other equipment of network side Breath, such as consults to set up relevant information of dedicated bearing etc., specifically refers to the description in the embodiment in Figure 10 and Figure 11.
904th, MME carries out small data transmission according to above-mentioned strategy.
In this example, MME is when knowing that UE supports that small data optimization is transmitted, according to the choosing that relevant parameter carries out specific strategy Selecting, and notifying the UE strategies, small data transmission environment can be effectively set up on the basis of negotiation carries out small data transmission Purpose.
As shown in Figure 10, it is that the small data transmission strategy transmitted before small data determines and notification procedure.Under the scene, Equipment and user terminal in network can record which bearer belongs to small data, little so as to adopt when carrying out data transmission The transmission mechanism of data carries out data transmission.In this example by taking LTE communication system as an example, then the network side in above-described embodiment refers to It is P-GW and S-GW etc. in LTE communication system, the LTE communication system in certain this example can also be other wireless telecommunications systems System, then the network element in this example can be substituted with the similar network element in other wireless telecommunication systems, do not gone to live in the household of one's in-laws on getting married one by one herein State.
1001st, user terminal (User Equipment, UE) initiates attach request (Attach Request)/PDN connections Request (Connection Request)/TAU requests (TAU Request), can carry small data (small in the request Data) configured transmission.
The parameter can be the traffic performance of small data, or simply indicate whether to support small data Transmission, if small data traffic performances can include following parameter：Each transmitted data amount, data transfer direction (on OK, descending or two-way), the persistent period (data transfer duration), the number of transmissions (number of times transmitted within the persistent period), The combination of one or more parameters in size of data.Can such as be the combination of one of them or several parameters, can such as be (uplink, 5 times, 100byte)；UE can not also carry the parameter, then obtain in the subscription data that MME can be obtained from HSS.
Small data parameters can increase new parameter in existing message can also be used as the one of existing parameter Point, the part for such as having this parameter as network capabilities passes to MME.
1002nd, MME obtains subscription data from HSS (this step is optional).The subscription data obtained in this example supports UE tools There is the characteristic of small data, UE in addition can also be preserved in subscription data and supports small data traffic performances.Meanwhile, MME On can also be small data transmission configurations some parameters (this step is optional).Such as (proprietary or default using bearer types Carry), bearing parameter (Qos etc.) etc..Certainly, the mode for obtaining transmission small data parameters can also be that eNB is by wide The information of broadcasting issues small data policy；(such as, UE by OTA or OMA DM, or can also pass through RRC information RRCConnectionSetupComplete or RRCConnectionReconfiguration) obtain small data parameters.
1003rd, whether MME is set up according to the characteristic of the small data for obtaining and the parameter determination of operator's configuration dedicated bearer.
1004～1008, MME and network side are consulted to set up and are carried.The process is divided into three kinds of situations, is retouched individually below State.
Situation one：If MME determines that the bearer types that sets up are default bearer, MME can be special by small data business Property (traffic performance can be obtained from the subscription data in UE or HSS) is passed to by Create Session Request SGW and PGW.The small data traffic performances can be passed to PCRF by PGW.PGW or PCRF can be configured according to operator The strategy modification carrying parameter.
Situation two：If MME judges to need to set up dedicated bearing as small data, MME is in Create Session Request increases small data configured transmissions, and the inside can carry the Qos parameters of small data units (bearer).Separately Small data traffic performances (traffic performance can be obtained from the subscription data in UE or HSS) can be passed to by outer MME SGW and PGW.The small data traffic performances can be passed to PCRF by PGW.PGW or PCRF can also be according to configuring thereon Small data strategies are modified to the small data parameters that MME is transmitted, and PGW initiates dedicated bearing Establishing process afterwards.
Situation three：If PGW or PCRF determines bearer types, MME can be by small data traffic performances (business Characteristic can be obtained from the subscription data in UE or HSS) by Create Session Request message transmissions to SGW and PGW.The small data traffic performances can be passed to PCRF by PGW.PGW or PCRF is according to the carrier policy for configuring thereon Decision is using default bearer or to set up dedicated bearing transmission small data data, if PCRF or PGW determines using specially There is carrying, then initiate dedicated bearing Establishing process.In loading establishing process, the finger of the small data carrying that the network side is determined Show and be sent to MME, the instruction sets up dedicated bearing for being designated the small data transmission；Or identify small data transmission employing Default bearer
Then in the case of above-mentioned three kinds, SGW, PGW return Create Session Response to MME, for situation two With situation three, if MME or PGW determine to transmit small data using dedicated bearing, then PGW initiates dedicated bearing and sets up stream Journey is setting up dedicated bearing.
1009th, MME returns Attach Accept/PDN Connection Accept/TAU Accept to UE, will Small data transmission strategies pass to UE.UE checks whether local resource meets small data strategies before transmitting the data Requirement, if meeting using small data optimize transmission.Meanwhile, MME can also indicate that UE that carrying is for small Data optimizes.
1010th, UE transmission Attach Complete/PDN Connection Complete/TAU complete are to MME.
As shown in figure 11, then the step of be situation, i.e. Figure 10 for non-proprietary carrying 1004～1008 situation one, its Flow process is as follows.
1101st, UE sends attach request (Attach Request) to MME, can carry small data in the request Indication parameters indicate MME UE support small data optimizations.Certainly, similar UE can not also carry the parameter, MME obtains from the CAMEL-Subscription-Information of HSS UE whether UE supports that small data optimize.
1102nd, MME sends Create Session Request to SGW, can carry parameter small in the request Data indication are used for indicating that SGW, PGW UE to support that small data optimize, and SGW can be with root when receiving downlink data According to this instruction, combine operator thereon configure small data strategy decisions whether using small data Optimizing Flows.
1103rd, SGW sends Create Session Request to PGW.
1104th, PGW returns Create Session Response to SGW.
1105th, SGW returns Create Session Response to MME.
1106th, the small data transmission strategies that operator is configured by MME pass to UE by Attach Accept.UE Check whether before transmitting the data and meet small data strategies, so as to decide whether to optimize transmission using small data.
1107th, UE transmission Attach Complete are to MME.
The small data transmission of the data transfer in the embodiment of the present invention is further described in the embodiment of Figure 10 and Figure 11 Strategy determines and notification procedure.After the completion of the process, UE and network side are carried out further according to the small data transmission strategy of the determination Data transfer.
Such as, when UE there are multiple business data transmissions, different bearer (dedicated bearing, default bearer are mapped to by TFT Or the carrying judged to determine according to UE), if business datum meets the small data policy of MME transmission, UE is used Small data optimize transmission mechanism and are transmitted；Otherwise setting up DRB carries out business data transmission.When downlink data reaches SGW, If configuration is tactful with regard to small data in the operator of SGW before business datum meets, SGW is excellent using small data Change transmission mechanism.Otherwise setting up DRB carries out business data transmission.
Hereinafter then it is respectively described on uplink and downlink direction in the dedicated bearing determined according to small data transmission strategy, default Carry or the process of the carrying transmitting data for judging to determine according to UE.
As shown in figure 12, be uplink and downlink direction data transfer in the embodiment of the present invention flow process.This example is MO (Mobile Original, UE rise and exhale) scene, MME replaces eNB distributing users face TEID and address to SGW, carries out data transmission, transfer The TEID distributed before SGW is deleted into MME afterwards and address.
1201～1203, UE is in RRC_idle states, and when there is upstream data transmit, UE initiates RRC connection establishments Flow process, UE transmit NAS message in RRCConnectionSetupComplete, and the message includes small data Container, by IP data, bearer id are placed in small data container and transmit.
1204th, eNB is placed on small data container in Initial UE message and passes to MME.
1205th, the IP data in small data container are taken out and are packaged into user plane GTP data by MME, according to Bearer id find its corresponding SGW address and TEID, give the corresponding SGW by GTP-U data transfers.
1206th, by the traffic performance for obtaining before, MME can learn whether which has downlink business.
1207th, if there are downlink business, MME replaces the TEID of eNB allocation of downlink and address, and sends Modify to SGW Bearer Request (request includes bearer id, GTP-U TEID, address).
1208th, SGW returns Modify Bearer Response message.And when there is downlink data to arrive, data are sealed GTP-U data is activations are dressed up to MME.
1209～1211, after MME receives downlink data, take out IP data, be assembled into data container (including IP data, bearer id), and data container are placed on Downlink NAS TRANSPORT by eNB's DLinformationTransfer passes to UE.
1212～1213, when downlink business is completed, MME sends Release Access bearer Request (wherein Including bearer id) give SGW.SGW deletes the TEID of MME distribution thereon and address, returns Release Access bearer Response is to MME.
As shown in figure 13, then it is the up-downgoing data transfer in MT (Mobile Terminal, network side rise and exhale) scene Example.
1301st, SGW receives downlink data, and UE is in RRC_idle states, and SGW sends Downlink data Notification carries out paging to trigger MME to UE to MME.
1302nd, MME returns Downlink data notification ACK to SGW.
1303～1304, MME carries out paging by eNB to UE, sends paging message.
1305th, after UE receives paging, RRC connection establishment processes are initiated, NAS message Service Request is included in Send in RRCConnectionRequestComplete.
1306th, eNB transmission Initial UE message wherein include NAS message Service Request to MME.
1307th, MME replaces TEID and the address of eNB allocation of downlink, sends Modify bearer Request (its to SGW Include bearer id, GTP-U TEID, address).
1308th, SGW returns Modify Bearer Response message.And when there is downlink data to arrive, data are sealed GTP-U data is activations are dressed up to MME.
1309～1310, after MME receives the downlink data of SGW transmissions, IP data is taken out, NAS message data is placed on In container (including IP data, bearer id), and data container are placed on Downlink NAS TRANSPORT passes to eNB, and eNB is then placed on data container in DLinformationTransfer and passes to UE.
1311～1313, UE is sent if there are upstream data, then encapsulate data in data container, and will Data container pass to MME by ULinformationTransfer and Uplink NAS TRANSPORT, and MME takes Go out IP data, user plane GTP data transfer is configured to SGW.
1314～1315, when downlink business is completed, MME sends Release Access bearer Request (wherein Including bearer id) give SGW.SGW deletes the TEID of MME distribution thereon and address, returns Release Access bearer Response is to MME.
In the above-described embodiments by data container encapsulation of data, in up direction, when there is multiple carryings When small data are transmitted, the data container (or referred to as small data container) can include IP packet List, as shown in table 1.
Table 1：
IP packet list
>IP packet list Item IEs
>>Bearer id
>>IP data
After MME receives this list, need to find corresponding SGW TEID and address according to bearer id, by IP data structures GTP_U bags are caused to pass to SGW.
When there is downlink data transmission, when SGW receives the IP data of multiple carryings, and when being judged as small data, SGW can also construct IP packet list, as shown in table 2.
Table 2：
IP packet list
>IP packet list Item IEs
>>Bearer id
>>IP data
MME is placed it in after receiving the list in NAS message small data container and is passed to UE.
If SGW receives multiple carrying data, it is also possible to do not constitute above-mentioned list or directly send out multiple carrying data MME is given, MME receives multiple DDN (including IP data, bearer id) message, and MME can construct IP packet List, as shown in table 3.
Table 3：
IP packet list
>IP packet list Item IEs
>>Bearer id
>>IP data
MME is placed it in NAS message small data container and is passed to UE.
The present invention also provides following examples.It should be noted that the numbering of following examples it is not absolutely required to defer to The number order of preceding embodiment：
Embodiment 1, a kind of data transmission method, methods described include：
Mobility Management Entity receives the small data transmission parameter that home subscriber server HSS or user terminal send, institute Stating small data transmission parameter includes whether the user terminal supports the instruction of small data transmission；
The Mobility Management Entity is according to the small data transmission parameter determination small data transmission strategy；
The small data transmission strategy of the determination is sent to user terminal by the Mobility Management Entity；
The Mobility Management Entity carries out small data transmission according to the small data transmission strategy and user terminal.
Embodiment 2, method as described in Example 1, the small data transmission parameter also include the traffic performance of small data, The traffic performance of the small data includes each transmitted data amount, data transfer direction, the data transfer persistent period, holds described One or more in the continuous time in the number of times of transmission.
Embodiment 3, the method as described in embodiment 1 or 2, the Mobility Management Entity are passed according to the small data Defeated parameter determination small data transmission strategy includes：
The Mobility Management Entity carries out small data transmission according to the small data transmission parameter determination and network side Bearer types, the bearer types include dedicated bearing or default bearer.
Embodiment 4, the method according to embodiment 3,
The Mobility Management Entity carries out small data transmission according to the small data transmission parameter determination and network side When bearer types are dedicated bearing, including：
The Mobility Management Entity is set up proprietary according to the small data transmission parameter determination for the small data transmission The instruction of carrying and the parameter of the dedicated bearing；Or
The Mobility Management Entity carries out small data transmission according to the small data transmission parameter determination and network side When bearer types are default bearer, including：
Mobility Management Entity small data transmission according to the small data transmission parameter determination is held using default Load and the parameter of the default bearer.
Embodiment 5, the method according to embodiment 1, the Mobility Management Entity are passed according to the small data Defeated parameter determination small data transmission strategy, including：
The small data transmission parameter is sent to network side by the Mobility Management Entity, so that the network lateral root According to the carrying that its carrier policy for configuring determines transmission small data；
The Mobility Management Entity receives the instruction of the small data carrying that the network side determines, the small data is carried Instruction be used for being designated the small data transmission setting up dedicated bearing or identifying the small data transmission and adopt default bearer.
Embodiment 6, the method as any one of embodiment 1 to 5, the Mobility Management Entity is according to described Small data transmission strategy carries out small data transmission with user terminal to be included：
The small data container comprising uplink small data that the Mobility Management Entity receive user terminal sends is described little Data capsule includes carrying mark and the corresponding IP bags of the mark；
The Mobility Management Entity determines network side channel termination point mark according to the carrying mark in the small data container Know the IP address of symbol TEID and the Mobility Management Entity, and corresponding for mark IP bags are configured to GTP-U bags, according to The GTP-U is transferred to network side by the TEID and the IP address.
Embodiment 7, the method as any one of embodiment 1 to 5, the Mobility Management Entity is according to described Small data transmission strategy carries out small data transmission with user terminal to be included：
When descending small data is transmitted, the TEID of the Mobility Management Entity allocation of downlink and the mobile management reality The IP address of body, and by the TEID, the IP address and carry network side described in identification notification；
The Mobility Management Entity receives the GTP-U bags that the network side sends, and encapsulates in need in the GTP-U bags The small data of transmission；
The GTP-U bags for receiving are configured to small data container by the Mobility Management Entity, according to the TEID and The small data container transport is given the user terminal by the IP address；
When the downlink data transmission is completed, the Mobility Management Entity notifies the network side to delete the TEID IP address with the Mobility Management Entity.
Embodiment 8, a kind of data transmission method, methods described include：
User terminal sends to Mobility Management Entity and carries small data transmission parameter, and the small data transmission parameter includes Whether the user terminal supports the instruction of small data transmission, so that the Mobility Management Entity is passed according to the small data Defeated parameter determination small data transmission strategy；
The user terminal receives the small data transmission strategy that the Mobility Management Entity sends；
The user terminal carries out small data transmission according to the small data transmission strategy and the Mobility Management Entity.
Embodiment 9, the method according to embodiment 8, the small data transmission parameter also include that the business of small data is special Property, the traffic performance of the small data include each transmitted data amount, data transfer direction, the data transfer persistent period, in institute State one or more in the persistent period in the number of times of transmission.
Embodiment 10, the method according to embodiment 8, the user terminal is according to the small data transmission strategy and institute Stating Mobility Management Entity and carrying out small data transmission includes：
The small data container comprising uplink small data that the user equipment is sent to the Mobility Management Entity, described Small data container includes carrying mark and the corresponding IP bags of the mark, so that the Mobility Management Entity is according to described Carrying mark in small data container determines the IP ground of network side channel termination point identifier TEID and the Mobility Management Entity Location, and corresponding for mark IP bags are configured to GTP-U bags and are transferred to network side.
Embodiment 11, the method according to embodiment 10, the user terminal according to the small data transmission strategy with The Mobility Management Entity carries out including before small data transmission：
Whether the user terminal before the small data container comprising uplink small data is sent checked that transmission was carried and meets The small data transmission strategy；
When inspection result is for meeting, the user terminal is carried according to the small data transmission strategy in the transmission Small data transmission is carried out, when inspection result is not for meeting, the user terminal triggering Common data transmission flow process transmission is described Data.
Embodiment 12, a kind of Mobility Management Entity, the Mobility Management Entity include：
Receiving unit, for receiving the small data transmission parameter that home subscriber server HSS or user terminal send, described Small data transmission parameter includes whether the user terminal supports the instruction of small data transmission；
Determining unit, for the small data transmission parameter determination small data transmission strategy received according to the receiving unit；
Transmitting element, for being sent to user terminal by the small data transmission strategy that the determining unit determines；
Transmission unit, the small data transmission strategy for being determined according to the determining unit carry out little with user terminal Data transfer.
Embodiment 13, the Mobility Management Entity according to embodiment 12, the small data that the receiving unit is received are passed Defeated parameter also includes that the traffic performance of small data, the traffic performance of the small data include each transmitted data amount, data transfer One or more in direction, data transfer persistent period, the number of times transmitted within the persistent period.
Embodiment 14, the Mobility Management Entity as described in embodiment 12 or 13, the determining unit is specifically for basis The small data transmission parameter determination that the receiving unit is received carries out the bearer types of small data transmission with network side, described Bearer types include dedicated bearing or default bearer.
Embodiment 15, the Mobility Management Entity according to embodiment 14, the determining unit include：
Proprietary determination subelement, the small data transmission parameter determination for being received according to the receiving unit are described Small data transmission sets up the instruction of dedicated bearing and the parameter of the dedicated bearing；Or
Default determination subelement, for little according to the small data transmission parameter determination that the receiving unit is received Data transfer is using default bearer and the parameter of the default bearer.
Embodiment 16, the Mobility Management Entity according to embodiment 12 or 13, the determining unit include：
Network side sends subelement, and the small data transmission parameter for receiving the receiving unit is sent to network Side, so that the network side determines the carrying of transmission small data according to its carrier policy for configuring；
Network side receiving subelement, for receiving the instruction that the small data that the network side determines is carried, the small data The instruction of carrying sets up dedicated bearing or the mark small data transmission using default for being designated the small data transmission Carry.
Embodiment 17, the Mobility Management Entity as any one of embodiment 12 to 16, the transmission unit include：
Container reception subelement, for the small data container comprising uplink small data that receive user terminal sends, described Small data container includes carrying mark and the corresponding IP bags of the mark；
Mark determination subelement, for the carrying in the small data container that received according to the container reception subelement Mark determines the IP address of network side channel termination point identifier TEID and the Mobility Management Entity；
Bag transmission subelement, for corresponding for mark IP bags are configured to GTP-U bags, determines son according to the mark The TEID and the IP address that unit determines by the GTP-U and is transferred to network side.
Embodiment 18, the Mobility Management Entity as any one of embodiment 12 to 16, the transmission unit include：
Distribution subelement, for when descending small data is transmitted, the TEID of allocation of downlink and the Mobility Management Entity IP address, and by the TEID, address and carry identification notification described in network side；
Bag receiving subelement, for receiving the GTP-U bags that the network side sends, encapsulates in the GTP-U bags in need The small data of transmission；
Container sends subelement, and the GTP-U bags for receiving the bag receiving subelement are configured to small data appearance Device, according to the IP address of the TEID and the Mobility Management Entity of the distribution subelement distribution by the decimal The user terminal is given according to container transport；
Subelement is deleted, for when the downlink data transmission is completed, notifying the network side to delete distribution The IP address of the TEID and the Mobility Management Entity of unit distribution.
Embodiment 19, a kind of mobile terminal, the mobile terminal include：
Parameter transmitting element, for sending small data transmission parameter, the small data transmission ginseng to Mobility Management Entity Number includes whether the user terminal supports the instruction of small data transmission, so that the Mobility Management Entity is according to described little Data transmission parameters determine small data transmission strategy；
Policy receipt unit, for receiving the small data transmission strategy that the Mobility Management Entity sends, described Small data transmission strategy is that the mobile management entity is true according to the parameter transmitting element transmission small data transmission parameter Fixed；
Data transmission unit, for the small data transmission strategy that received according to the Policy receipt unit and the shifting Mobility management entity carries out small data transmission.
Embodiment 20, the mobile terminal according to embodiment 19, the data transmission unit include：
Container transmitting element, the small data comprising uplink small data for sending to the Mobility Management Entity hold Device, the small data container include carrying mark and the corresponding IP bags of the mark, so that the Mobility Management Entity Network side channel termination point identifier TEID and the mobile management reality are determined according to the carrying mark in the small data container The IP address of body, and corresponding for mark IP bags are configured to GTP-U bags and are transferred to network side.
Embodiment 21, the mobile terminal according to embodiment 19 or 20, the data transmission unit include：
Detection sub-unit is carried, whether is met for before transmission unit sends uplink small data, checking that transmission is carried The small data transmission strategy；
Data is activation subelement, is to meet the small data transmission plan for the result for carrying detection sub-unit inspection When slightly, carrying in the transmission carries out small data transmission according to the small data transmission strategy, when inspection result is not meet During the small data transmission strategy, triggering Common data transmission flow process transmits the data.
In sum it is appreciated that providing the lateral UE of network in embodiments of the present invention notifies small data transmission plans Process slightly so that small data transmission efficiency is improved.Meanwhile, UE, SGW or MME can construct IP packet list (bearer Id, IP Packet) the small data data of multiple bearer can be once transmitted, also further increase efficiency of transmission.Separately Outward, when small data transmission strategies are determined, if SGW does not support small data characteristics, MME can be before transmitting the data Set up the carrying transmission data of SGW so that the transmission of small data is not necessarily dependent on the characteristic of SGW..
One of ordinary skill in the art will appreciate that realize all or part of flow process in above-described embodiment method, being can be with Instruct related hardware to complete by computer program, described program can be stored in a computer read/write memory medium In, the program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..
Above disclosed is only a kind of preferred embodiment of the invention, can not limit certainly the power of the present invention with this Sharp scope, the equivalent variations that is therefore made according to the claims in the present invention still belong to the scope covered by the present invention.

Claims (21)

1. a kind of data transmission method, it is characterised in that methods described includes：
The small data transmission parameter that Mobility Management Entity receive user terminal sends, the small data transmission parameter include described Whether user terminal supports the instruction of small data transmission；
The Mobility Management Entity is according to the small data transmission parameter determination small data transmission strategy；
The small data transmission strategy of the determination is sent to user terminal by the Mobility Management Entity；
The Mobility Management Entity carries out small data transmission according to the small data transmission strategy and user terminal.
2. the method for claim 1, it is characterised in that the small data transmission parameter also includes that the business of small data is special Property, the traffic performance of the small data include each transmitted data amount, data transfer direction, the data transfer persistent period, in institute State one or more in the persistent period in the number of times of transmission.
3. method as claimed in claim 1 or 2, it is characterised in that the Mobility Management Entity is according to the decimal Determine that small data transmission strategy includes according to configured transmission：
The Mobility Management Entity carries out the carrying of small data transmission according to the small data transmission parameter determination and network side Type, the bearer types include dedicated bearing or default bearer.
4. method according to claim 3, it is characterised in that
The Mobility Management Entity carries out the carrying of small data transmission according to the small data transmission parameter determination and network side When type is dedicated bearing, including：
The Mobility Management Entity sets up dedicated bearing according to the small data transmission parameter determination for the small data transmission Instruction and the dedicated bearing parameter；Or
The Mobility Management Entity carries out the carrying of small data transmission according to the small data transmission parameter determination and network side When type is default bearer, including：
Mobility Management Entity small data transmission according to the small data transmission parameter determination adopt default bearer with And the parameter of the default bearer.
5. method according to claim 1, it is characterised in that the Mobility Management Entity is according to the small data Configured transmission determines small data transmission strategy, including：
The small data transmission parameter is sent to network side by the Mobility Management Entity, so that the network side is according to which The carrier policy of configuration determines the carrying of transmission small data；
The Mobility Management Entity receives the instruction of the small data carrying that the network side determines, the finger that the small data is carried Show that the small data transmission sets up dedicated bearing or the mark small data transmission adopts default bearer for being designated.
6. the method as any one of claim 1 to 5, it is characterised in that the Mobility Management Entity according to The small data transmission strategy carries out small data transmission with user terminal to be included：
The small data container comprising uplink small data that the Mobility Management Entity receive user terminal sends, the small data Container includes carrying mark and the corresponding IP bags of the mark；
The Mobility Management Entity determines network side channel termination point identifier according to the carrying mark in the small data container TEID and the IP address of the Mobility Management Entity, and corresponding for mark IP bags are configured to GTP-U bags, according to described The GTP-U is transferred to network side by TEID and the IP address.
7. the method as any one of claim 1 to 5, it is characterised in that the Mobility Management Entity according to The small data transmission strategy carries out small data transmission with user terminal to be included：
When descending small data is transmitted, the TEID's and the Mobility Management Entity of the Mobility Management Entity allocation of downlink IP address, and by the TEID, the IP address and carry network side described in identification notification；
The Mobility Management Entity receives the GTP-U bags that the network side sends, and encapsulates transmission in need in the GTP-U bags Small data；
The GTP-U bags for receiving are configured to small data container by the Mobility Management Entity, according to the TEID and described The small data container transport is given the user terminal by IP address；
When the downlink data transmission is completed, the Mobility Management Entity notifies the network side to delete the TEID and institute State the IP address of Mobility Management Entity.
8. a kind of data transmission method, it is characterised in that methods described includes：
User terminal sends to Mobility Management Entity and carries small data transmission parameter, and the small data transmission parameter includes described Whether user terminal supports the instruction of small data transmission, so that the Mobility Management Entity is joined according to the small data transmission Number determines small data transmission strategy；
The user terminal receives the small data transmission strategy that the Mobility Management Entity sends；
The user terminal carries out small data transmission according to the small data transmission strategy and the Mobility Management Entity.
9. method according to claim 8, it is characterised in that the small data transmission parameter also includes the business of small data Characteristic, the traffic performance of the small data include each transmitted data amount, data transfer direction, the data transfer persistent period, One or more in the persistent period in the number of times of transmission.
10. method according to claim 8, it is characterised in that the user terminal is according to the small data transmission strategy Small data transmission is carried out with the Mobility Management Entity includes：
The small data container comprising uplink small data that the user equipment is sent to the Mobility Management Entity, the decimal Include carrying mark and the corresponding IP bags of the mark according to container, so that the Mobility Management Entity is according to the decimal Carrying mark according to container determines the IP address of network side channel termination point identifier TEID and the Mobility Management Entity, and Corresponding for mark IP bags are configured to GTP-U bags and are transferred to network side.
11. methods according to claim 10, it is characterised in that the user terminal is according to the small data transmission strategy Include before small data transmission is carried out with the Mobility Management Entity：
The user terminal checked whether transmission carrying meets described before the small data container comprising uplink small data is sent Small data transmission strategy；
When inspection result is for meeting, the user terminal is carried in the transmission and is carried out according to the small data transmission strategy Small data transmission, when inspection result is not for meeting, the user terminal triggering Common data transmission flow process transmits the data.
12. a kind of Mobility Management Entity, it is characterised in that the Mobility Management Entity includes：
Receiving unit, for receiving the small data transmission parameter that home subscriber server HSS or user terminal send, the decimal Include whether the user terminal supports the instruction of small data transmission according to configured transmission；
Determining unit, for the small data transmission parameter determination small data transmission strategy received according to the receiving unit；
Transmitting element, for being sent to user terminal by the small data transmission strategy that the determining unit determines；
Transmission unit, the small data transmission strategy and user terminal for being determined according to the determining unit carry out small data Transmission.
13. Mobility Management Entity according to claim 12, it is characterised in that the small data that the receiving unit is received Configured transmission also includes that the traffic performance of small data, the traffic performance of the small data include that each transmitted data amount, data are passed One or more in defeated direction, data transfer persistent period, the number of times transmitted within the persistent period.
14. Mobility Management Entity as described in claim 12 or 13, it is characterised in that the determining unit is specifically for root The small data transmission parameter determination and network side that receive according to the receiving unit carry out the bearer types of small data transmission, institute Stating bearer types includes dedicated bearing or default bearer.
15. Mobility Management Entity according to claim 14, it is characterised in that the determining unit includes：
Proprietary determination subelement, the small data transmission parameter determination for being received according to the receiving unit are the decimal According to instruction and the parameter of the dedicated bearing that dedicated bearing is set up in transmission；Or
Default determination subelement, for small data according to the small data transmission parameter determination that the receiving unit is received Transmission is using default bearer and the parameter of the default bearer.
16. Mobility Management Entity according to claim 12 or 13, it is characterised in that the determining unit includes：
Network side sends subelement, and the small data transmission parameter for receiving the receiving unit is sent to network side, So that the network side determines the carrying of transmission small data according to its carrier policy for configuring；
Network side receiving subelement, for receiving the instruction that the small data that the network side determines is carried, the small data is carried Instruction be used for being designated the small data transmission setting up dedicated bearing or identifying the small data transmission and adopt default bearer.
17. Mobility Management Entity as any one of claim 12 to 16, it is characterised in that the transmission unit bag Include：
Container reception subelement, for the small data container comprising uplink small data that receive user terminal sends, the decimal Include carrying mark and the corresponding IP bags of the mark according to container；
Mark determination subelement, identifies for the carrying in the small data container that received according to the container reception subelement Determine the IP address of network side channel termination point identifier TEID and the Mobility Management Entity；
Bag transmission subelement, for corresponding for mark IP bags are configured to GTP-U bags, according to the mark determination subelement The TEID and the IP address for determining by the GTP-U and is transferred to network side.
18. Mobility Management Entity as any one of claim 12 to 16, it is characterised in that the transmission unit bag Include：
Distribution subelement, for when transmit descending small data when, the IP of the TEID of allocation of downlink and the Mobility Management Entity Address, and by the TEID, address and carry network side described in identification notification；
Bag receiving subelement, for receiving the GTP-U bags that the network side sends, encapsulates transmission in need in the GTP-U bags Small data；
Container sends subelement, and the GTP-U bags for receiving the bag receiving subelement are configured to small data container, root The small data is held according to the TEID of distribution subelement distribution and the IP address of the Mobility Management Entity Device is transferred to the user terminal；
Subelement is deleted, for when the downlink data transmission is completed, notifying the network side to delete the distribution subelement The IP address of the TEID and the Mobility Management Entity of distribution.
19. a kind of mobile terminals, it is characterised in that the mobile terminal includes：
Parameter transmitting element, for sending small data transmission parameter, the small data transmission parameter bag to Mobility Management Entity The instruction whether user terminal supports small data transmission is included, so that the Mobility Management Entity is according to the small data Configured transmission determines small data transmission strategy；
Policy receipt unit, for receiving the small data transmission strategy that the Mobility Management Entity sends, the decimal The small data transmission parameter determination is sent according to the parameter transmitting element according to transmission strategy for the mobile management entity；
Data transmission unit, for the small data transmission strategy that received according to the Policy receipt unit and the mobility Management entity carries out small data transmission.
20. mobile terminals according to claim 19, it is characterised in that the data transmission unit includes：
Container transmitting element, for the small data container comprising uplink small data sent to the Mobility Management Entity, institute Stating small data container includes carrying mark and the corresponding IP bags of the mark, so that the Mobility Management Entity is according to institute State the IP that the carrying mark in small data container determines network side channel termination point identifier TEID and the Mobility Management Entity Address, and corresponding for mark IP bags are configured to GTP-U bags and are transferred to network side.
21. mobile terminals according to claim 19 or 20, it is characterised in that the data transmission unit includes：
Detection sub-unit is carried, described for before transmission unit sends uplink small data, checking whether transmission carrying meets Small data transmission strategy；
Data is activation subelement, is to meet the small data transmission strategy for the result for carrying detection sub-unit inspection When, carrying in the transmission carries out small data transmission according to the small data transmission strategy, when inspection result is not for meeting When stating small data transmission strategy, triggering Common data transmission flow process transmits the data.
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